Brushless Geared Motor [For Those Struggling with Miniaturization of Robots]

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GMH Series

last updated：Nov 06, 2025

Corelss Motor Co.,ltd HQ

Official site

A compact gear is built into the brushless DC motor for small robots. This is a must-see for those struggling with miniaturizing robots.

The gear-in-motor "GMH series" is a lightweight and compact high-efficiency geared motor that incorporates a small planetary gear within a coreless structure motor. By serving as an alternative to products with gear heads, it contributes to system miniaturization. Since there is no iron core, there are no losses that cause heat generation, allowing for high-speed rotation. It is widely used in small AGVs (automated guided vehicles), compact conveyors, and small robots. 【Features】 ■ Lightweight and compact with powerful performance due to the special coreless structure ■ Capable of handling small applications that require high-speed rotation ■ Excellent quietness thanks to the built-in small planetary gear ■ Adjustable to desired rotation speed and torque ■ Achieves miniaturization of geared motors by placing the small gear inside the motor ■ Can manufacture motors according to desired gear ratios ■ Options available for encoders and brakes For more details, please contact us or download the catalog.

Related Link - http://www.cls-motor.com/products/dc/gearin

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basic information

To those struggling with miniaturization of robots, we present a new proposal from Coreless Motor Co., Ltd. A reliable robot that demonstrates great power in a small body. Just imagining it is exciting, isn't it? Unfortunately, conventional motors have a structure where the motor and gearhead are separate, making geared motors larger and complicating the miniaturization and weight reduction of the system. The GSH series from Coreless Motor delivers high torque while maintaining the size of the motor. The significant difference comes from utilizing one of the core features of the coreless structure: the hollow structure. By incorporating gears into this hollow section, we have made it possible to save space for the entire system. Furthermore, by placing the gears inside the motor, we also contribute to the quietness of the geared motor. We want to share the joy of making what was once impossible, possible, with you. With this aspiration in mind, we support our customers in the miniaturization of motors. [Applications for FA Equipment] - General small robots - AGVs - Unmanned transport vehicles - Trolleys with assistance - Unmanned trolleys and other general FA equipment.

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※The prototype creation will take some time.

Applications/Examples of results

To those struggling with the miniaturization of robots, we present a new proposal from Coreless Motor Co., Ltd. A reliable robot that demonstrates great power in a small body. Just imagining it is exciting, isn't it? Unfortunately, with conventional motors, the motor and gearhead are separate, making geared motors larger and complicating the miniaturization and lightweight design of the system. The GSH series from Coreless Motor delivers high torque while maintaining the size of the motor. The key difference comes from utilizing one of the main features of the coreless structure: the hollow design. By incorporating gears within this hollow section, we have made it possible to save space for the entire system. Additionally, by placing the gears inside the motor, we also contribute to the quietness of the geared motor. We want to share the joy of making the impossible possible with you. With this aspiration in mind, we support our customers in the miniaturization of motors. - Robotics equipment, industrial machinery, mobile robots, transport robots, medical devices, agricultural machinery, power tools, and many more.